ABSTRACT
Objective To investigate the relationship between serum uric acid and traditional risk factors of coronary artery disease. Basic information was obtained by using questionnaire and measured for blood pressure , height ,weight. Venous blood was collected for detecting fasting plasma glucose ,serum lipid and uric acid. All data were analyzed with SPSS 20.0. Correlation analysis was used to assess the association of serum uric acid and traditional risk factors of coronary artery disease in patients with coronary artery disease. Results The mean value of serum uric acid in coronary artery disease is 6.3 mg/dL. The level of serum uric acid was significantly higher in male than that in female. Serum uric acid and body mass index(r = 0.137,P < 0.001),systolic blood pressure (r = 0.053,P = 0.025)and triglycerides(r = 0.188,P < 0.001)had a positive correlation. Serum uric acid was negatively correlated with high density lipoprotein cholesterol(r =-0.146,P < 0.001)and estimated glomerular filtration rate(r=-0.340,P<0.001). Serum uric acid was higher in patients with men,smoking,drinking,and chronic CAD. The serum uric acid level was lower in patients with exercise time more than 30 minutes than no movement or movement time less than 30 minutes. Conclusion Elevated serum uric acid were associated with body mass index,systolic blood pressure,triglyceride,high density lipoprotein cholesterol,estimated glomerular filtration rate,male,smoking,and chronic CAD.
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Genome-wide association study (GWAS) has been increasing rapidly worldwide in recent years, along with more attention to heredity and genetic polymorphism of diseases.The single nucleotide polymorphism (SNP) is the most common genetic variant in the human genome, which can influence gene expression, transcription, translation and modification, and has become one of the important causes of disease susceptibility.Not only is uric acid related SNP susceptible to hyperuricemia and gout, but also plays an important role in the circulation, respiration, and nervous system diseases.Therefore, the present paper reviews the relationship between uric acid related SNP and clinical diseases in order to bring a new perspective on prevention and treatment.
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Objective To evaluate T cell and CD4+ CD28-T in the development and progression of abdominal aortic aneurysms (AAAs).Methods Fifty Wistar rats were randomly divided into 5 groups (n =10 each).An AAA animal model is established by enhancing perfusing elastase to the infrarenal abdominal aorta of the rats.The levels of T cell,B cell and macrophage cell of abdominal aorta of the rats on days 3,7,14 and 28,were detected by enzyme linked immunosorbent assay(ELISA).CD4+ CD28-T cell of the peripheral blood were measured by flow cytometry.Result There was significant T-lymphocyte infiltration both in middle and outer membrane of the artery of the rats on day 7 after surgery.T-lymphocyte,B-lymphocyte and macrophage cell infiltration were on the peak in middle and outer membrane of the artery on day 14 after surgery.The ratio of CD4+ CD28-T cell in rat peripheral blood reached peak on day 7(P ＜0.05).Conclusions T cell and CD4+ CD28-T cell expression increased in peripheral blood and abdominal aorta in AAA rat model,suggesting a potential role of T cell and CD4+ CD28-T cells in the pathogenesis of AAAs,especially during the early development of AAAs.
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<p><b>OBJECTIVE</b>To investigate the dynamic changes of type I collagen, and the activity of metalloproteinases-1 (MMP-1) and tissue inhibitor of metalloproteinases-1 (TIMP-1) after angioplasty.</p><p><b>METHODS</b>The restenotic model of iliac arteries of domestic microswine was established with hypercholesterol feed plus two angioplasties. Angioplastied vessels were harvested at the end of 1, 2, 3 and 6 months after the second angioplasty. Immunohistochemistry, transmission electronic microscopy and image quantitative analysis techniques were employed to study neointimal proliferation, the phenotype of vascular smooth muscle cells (VSMC) and the expression of type I collagen, MMP-1 and TIMP-1.</p><p><b>RESULTS</b>The peak of vascular neointimal proliferation was at 3 months after angioplasty. The expression of type I collagen gradually increased from 1 to 6 months after angioplasty. For MMP-1, expression was lower in the early stage after angioplasty but increase to normal levels of control vessels at 6 months after angioplasty. Expression of TIMP-1 rapidly increased in the early phase after angioplasty, reached peak at 3 months and maintained the high level till 6 months after angioplasty. Meanwhile, the VSMC was predominantly the synthetic phenotype at the early stage and was transformed to the contractive phenotype at the late stage after angioplasty. The ratio of TIMP-1 and MMP-1 was positively related to the area of the neointima and the expression of type I collagen respectively (P < 0.01).</p><p><b>CONCLUSION</b>Type I collagen increased gradually after angioplasty, which might be determined by the ratio of TIMP-1/MMP-1 and also related to the phenotype of VSMC.</p>